Changeable exhibitor.



No. 859,223. PATBNTED JULY'Q, 1907.

R. G. HOWARD. CHANGEABLE EXHIBITOR.

APPLICATION FILED NOV. 6, 1905. RENEWED DEG. 21, 1906.

2 SHEETS-SHEET 1.

MZuesses'. Q jiwczzimy PATENTED JULY 9, 1907.

R. s. HOWARD. GHANGEABLB EXHIBITOR. APPLIOATION IILED NOV. 6, 1905. RENEW ED DEO.21,1906.

2 SHEBTSSHEBT 2.

ll/flnessesr H g mmou n c each time the platform is UNITED STATES PATENT OFFICE.

ROBERT G. HOWARD, OF NEWTON, MASSACHUSETTS.

CHANGE ABLE EXHIBITOR.

No. 859,223. Specification of Letters Patent. Patented July 9, 1907.

Application filed November 6, 1905. Renewed December 21, 1906. Serial No. 3%,872.

platform which is adapted to be depressed by the weight of a person standing upon it.

The exhibiting device consists essentially of a disk 9 mounted on the shaft f 2 back of the dial plate f, said v disk having secured to or printed upon or otherwise provided thereon any number of exhibits or advertisements. The exhibits or advertisements are displayed through an opening f 5 in the dial plate f. A ratchet wheel h is secured to or rigidly connected with said disk g, having any desired number of teeth, but preferably a number corresponding to the number of exhibits or advertisements on the disk, and said ratchet wheel is engaged by a pawl h pivoted to the extremity of an arm h which is mounted to turn loosely on the shaft P. The pawl-carrying arm h has a weight attached to it, which is herein shown as a block If, mounted on the screw t eaded portion of an arm h*, which is attached to the pawl-carrying arm W. h represents a spring finger which engages the ratchet wheel and prevents backward rotation thereof. A lever i is pivoted at L to the frame (2 which extends upward and its upper end is connected by a spring 41 with the pawl-carrying arm, and said lever has a downwardly extended portion or ear which is formed with a cam slot t, adapted to receive a pin i projecting from the frame b As the frame is moved downward, as by a person mounting the platform, the pin i working in the slot i moves the lever i on its pivot, and by means of the spring connection of said lever with the pawl-carrying arm, moves said arm to turn the ratchet-wheel and disk attached to or connected with it. The spring i provides an elastic connection so that as a person steps onto the platform and thereby suddenly depresses it, such sudden movement will not be imparted to the disk g.- The pin i normally occupies a position at the upper end of the cam slot, and said slot is so formed that the pin acts to move the lever i its full stroke during the first part of its travel along the slot. The pin, however, remains in the slot for the purpose of retaining its connection with the lever as the frame 11 continues to descend, and subsequently permit of the return of the lever with the pin in engagement with it. By thus providing means for moving the lever on its pivot to operate the advertising-device on the first part only of the downward movement of the platform, I am enabled to cause the advertising-device to operate when a light weight is placed on the platform as well as a heavy weight, thereby insuring the operation of the advertising-device under all ordinary conditions. The form of exhibiting device, as herein shown, is simple and capable of displaying quite a number of exhibits or advertisements, but I desire it to be understood that my invention comprehends the employment of To all whom it may concern:

Be it known that 1, ROBERT G. I-lownnn, of Newton, county of Middlesex, State of Massachusetts, have invented an Improvement in Changeable Exhibitors, of which the following description, in connection with i the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to changeable exhibitors, and has for its object to construct a changeable exhibitor adapted to be applied to a weighing machine, and to be operated by a person mounting the platform of the machine to bring different exhibits or advertisements to view, or to display a different exhibit or advertisement depressed.

My invention comprehends the employment of means connecting an exhibiting device with the movable platform of a weighing machine, whereby whenever said platform is depressed by a weight upon it,as for instance, to operate the indicating device of the said machine, the exhibiting device will be operated, said connecting means preferably being in part elastic to obviate too suddenly moving the exhibiting device by the sudden depression of the platform.

Figure 1 shows in front elevation a changeable exhibitor embodying this invention applied to a weighing machine which is essentially of ordinary construction. Fig. 2 is an enlarged front elevation of the head of the machine, the dial plate and exhibiting disk being removed to expose the operatingparts. Fig. 3 is a vertical section of the head of the machine taken on the dotted line 33, Fig'. 2.

a represents the base of the machine, I) the movable platform, 0 a column rising from the base a which contains the platform rod 1/, and d a circular or other shaped head which is mounted on the column 0 and which contains the operating parts. The platform rod b, is connected at its upper end to a frame b to which the lower ends of the weighing or other supporting springs e, e, are attached, and the upper ends of said springs are attached to a cross bar a which is adjustably supported at the top of the head d. A rack bar f is formed upon or erected on the frame U, which extends upward and its teeth engage a pinion f secured to a shaft f having its bearings centrally disposed in the head (2. An indicator handor pointer f is secured to the shaft f which moves over a dial plate f set in the front of the head (Z.

The mechanism thus far described is common in weighing machines and is herein shown merely for the sake of illustrating my invention, and I desire it to be understood that my inven'ion comprehends the employment of any other equivalent form of weighing mechanism by which the weight of the person standing on the movable platform may be indicated, or any other form of spring supported or spring balanced or movable any other form of exhibiting device in lieu of the form herein show-n; and furthermore my invention comprehends the employment of crating the exhibiting device operated by a movable platfo herein shown.

any other means for opwhich is adapted to be rm in lieu of the means Having thus described my invention, What I claim as new and desire to secure by Letters Patent is:

1. In a changeable exhibitor, the combination of a movable platform.

lever for said exhibiting device,

an exhibiting device, a pivoted actuating having a cam slot, a pin working in said slot and a frame bearing said pin which is connected with said platform,

2. In a changeable exhibitor. hibiting disk. means for moving actuating lever for said means working able platform connected with sa described.

3. In a changeable exhibitor, hibiting by step, a pivoted lever arm having bearing said frame, substantially l. In a changeableexhibitor, hibiting device, a ratchet wheel engaging said ratchet wheel, a

a cam slot, a pin wo oted lever elastically connected with arm, a movable platform, and

said pivoted lever for operating said lever of; the platform, substantially a In a changeable exhibitor, exhibiting oted actuating lever connecting said lever a pin working in said slot, a fr:

substantially as described. the combination of an exit step by step, a pivoted having a cam slot, a pin in said slot, :1 frame bearing said pin, and a movid frame, substantially as the combination of an exdisk. a ratchet wheel and pawl for moving it step connected with the pawl-carrying rking in said slot, :1 frame said pin and a movable platform connected with as described.

the combination of an ex connected thereto, a pawl pawl-carrying arm, a pivsaid pawlcarrying means connecting it with upon the descent s described.

the combination with an disk, means for moving it step by step, a pivtherefor having with the means for turning the dis a cam slot, a spring ime hearing it and a movable platform connected with said frame, substantially as described.

(5. in a changeable exhibitor, hibiting device, a ratchet wheel the combination of an ex connected thereto, a pawl engaging said ratchet-wheel, a pawl-carrying arm, a pivoled lever el.-isltically connected with arm having a cam slot, a bearing said pin and a said frame, substantially 7. In a changeable pin wo exhibitor,

said pawl-carrying rking in said slot, a frame movable platform connected with as described.

the combination of a dial having a display opening, an indicating hand, a platform,

weighing springs, means conne said weighing an exhibiting device crating it stop by operated by S. In a changeable exhibitor, having a display opening, weighing springs, said weighing an exhibiting disk back of sai step conneete back of said (1 an indicating hand, means connecting springs and also with cting said platform with springs and also with said indicating hand,

d dial, and means for op d with and adapted to be said platform, substantially as described.

the combination of a dial a platform, said platform with said indicating hand, ial, and means for moving it connected with and adapted to be operated by said plat form, substantially as described 9. In a changeable exhibitor, tionary dial having a display ing hand, a movable means connecting said weighing ing-hand with said platform, a plurality of. exhibits, and a nected with and operated by said exhibiting device to success opening, platform, and weighing springs, and

an exhibiting step-by-step device also con said platform, for operating the combination of: a staa movable indicatsprings and said indicat device having ively bring the exhibits to view at the display opening, substantialy as described.

10. In a changeable exhibitor, having a display the shaft bearing said hand, a cally moving frame bearing connected to said frame, a necting said frame with the pi vice back of said dial, and erated by said frame for substantially as described.

11. 111 a changeable exhibitor,

opening, an indicating said rack, weighing platform, a platform means connected with operating said exhibiting the combination of a dial hand, a pinion on rack engaging it, a vertisprings rod conatform. an exhibiting deand opdevice,

the combination of an inrod connected frame to which said plat (heating device, a platform, a platform therewith, a vertically moving form rod is connected. weighing springs connected with said frame, means operated by said I one for operating the indicating device, an exhibiting disk, means for moving it stop by step, a pivoted lever connected with the means for moving said disk having a cam slot and a pin on said frame working in said slot, substantially as described.

12. In a changeable exhibitor, the combination with a movable platform, weighing springs connected therewith, a stationary dial and an indicating hand moving over said dial which is connected with and operated by said platform, of an exhibitingdevice having a plurality of. exhibits, and means elastically connected with and operated by said platform. for operating it to successively display the exhibits, substantially as described.

13%. In a changeable exhibitor, dicating device, a platform, a platform rod connected therewith, a vertically moving frame to which said platform rod is connected, weighing springs connected to said frame, means operated by said frame for operating the indicating device, an exhibiting disk. means for moving it step by step, a pivoted lever elastically connected with the means for moving said disk having a cam slot and a pin on said frame working in said slot, substantially as dcscribed.

1- In a changeable exhibitor, the combination of an indicating device, a platform, a platform rod connect d therewith, a vertically moving frame to which said pl. tform rod is connected, weighing springs connected to said frame, means operated by said frame for operating the in dicating device, an exhibiting device, a ratchet; wheel and pawl for moving it step by step a pivoted lever connected with and operated by said frame and a spring connecting said lever with the pawl carrying arm, substantially as described.

15. In a changeable exhibitor, the combination of weighingmechanism having conliter-balancing means the force of which varies with the displacement of the platform, a platform connected thereto, which is movable downwardly different distances according to the weight which placed upon it, an exhibiting-device having a plurality of exhibits and means, operated by said downwardly moving platform. for operating said exhibiting-device to display a different exhibit, substantially as described.

16. In a changeable exhibitor. the combination of weighingmechanism having countor-balancing means the force of which varies with the displacement of the platform, a platform connected thereto, which is movable downwardly different distances according to the weight which is placed upon it, an exhibiting-device having a plurality of exhibits, a pivoted actuating lever for said exhibiting-device, and means, operated by said downwardly moving platform for moving said actuating-lever on its pivot to actuate the exhibiting-device to display a different exhibit, substantially as described.

17. In a changeable exhibitor, the combination of weighingmechanism, a platform to' which it is connected, adapted to move downward a predetermned distance, an exhibiting-device, actuating means therefor, a pivoted lever elastically connected with said actuating means, and means, operated by the platform during the first part of said downward movement, for moving said lever on its pivot to operate the actuating means for the cxhibitingdevice, sub stantially as described.

18. In a changeable exhibitor, the combination of a dial having a display opening, an indicating-hand, a platform adapted to move downward a predetermined distance, weighingsprings, means connecting said platform with said weighing-springs and also with said indicating-hand, an exhibitingdevice back of said dial, and means, operated by said platform during the first part of said downward movement, for operating said exhibiting-device to display different advertisements, substantially as described.

15). In a changeable exhibitor, tionary dial having a display opening, a movable indicating-hand, a platform adapted to move downward a predetcrmined distance, weighing-springs and means connecting said weighingspring.' and said indicating-halal with said platform, an exhibiting-device having a plurality of exhibthe combination of an inthe combination of a staform during the first part o'E said downward movement for operating said exhibiting-device to successively display different exhibits, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses. 15

ROBERT G. HOWARD.

Witnesses B. .T. Norms, H. B. DAVIS. 

